Locomotive boiler



April 24, 1928. 1,667,111

c. G. HAWLEY LocoMoTIvE Bo'ILBn Filed April 8. 1926 (DO 0380038 Q Z/ O E mi; j G 6 PatentedA Apr. 24, 1928.

i UNIT-E Dv f stares PATENT OFFICE.

CHAR-LES GILBERT HAWLEY, 0E CLEVELAND, oIIIo, AssIGNoR To LoooMoTIvE EIRE- Box COMPANY,y oECHIcAGo, ILLINOIS, A CORPORATION 0E DELAWARE.

LocoMoTIvE BoILER.

Applicationined Ap'rn s, 192s. serial No. 100,480.

This invention relates to improvements 'in locomotive boilers audit consists of the matters hereinafter described and more particularly pointed outv in the appended claims.

The primary object of the invention is to provide a simple Aand efficient means in the.

side water legs of the boiler in substantially the plane of the front end of the tirebox to direct a portion ofthe upwardly moving. watei therein, toward the high end of thev crown sheet, so that when thevwater level recedes to uncover said high end, the uncovered area thereon is restricted in .size so that a small amount of steam escapes into the tirebox to warn the firemen of the actual water level irrespective of the levels indicated by the gages. Y

` rlhe above mentioned objectof the invention, as `well as others, together with the many advantages thereof will more fullyk appear as I proceed with my specification. In the drawing :f A y i Fig. 1 is a view-partly in elevation and partly in section, through the ireboxend of a locomotive boiler embodying vmy invention.

Fig. 2 is a transverse vertical sectionthrough the same as taken on the line 2-2 ofFig. 1. y f f Fig.3 is a horizontal detail sectional view as taken on the line 3-3 of Fig. 1.

Referring now in detail to that embodiment of the invention illustiated inthe accompanying sheet of the irebox and 2 indicates the flue sheet thereof and forming a continuation of the flue sheet is the inside throat sheet 3.

The sides of the iieboX are formed by they side sheets 4 4 and the top of the lirebox is formed by the transversely arched Aorcurved crown sheet 5, which merges into the irebox side sheets i-#h The side sheets and.'

crown sheet extend between and are connected at their ends to the back sheet 1 and flue andthroat sheets 2 and 3 respectively, the crown sheet being inclined upwardly from the back sheettoward the flue sheet so that its highest end or head 6 is at the'lue sheet end thereof.v

The wrapper of the boiler includes a roof sheet 7 a back head 8, outer lfireboir sheets 9 9 and an outer throat sheet 10 together with a boiler shell 11, all in the manner well known.l The front and rear water legs 12 drawing, 1 indicates the back and ll'andithe side water legs 14-14 are all closed at the bottom Vby a mud ring 15, while the bottom .of the lireboX is formed by the grate indicated by the dotted line 16 lin-Fig. 1. kIn the back head and back sheet respectively is formed the fuel door opening 11 and extending forwardly from the flue sheet 2y are theflues or tubes 18.- through which the products of combustion Afrom the i irebox are drawnto the smoke box at the front end of the boiler `(not shown),jin the manner well known. The roof sheet .and crownsheet are connected by' the usual stay bolts 19,- as are the side she-ets .1L andz 9, throat l sheets and 104and back sheets 1 landi' re#Y sl'iectively.` The construction just described is typical of` that type of locomotive boiler now in general use and need not be described Y in greater detail.

In each side water leg, nearjits front end and toward the top thereof I provide a deflector plate 20. Each plate is preferably welded toV the outer side sheet and is curved upwardly and inwardly s0 that its free inner Y,end overhangs the high or head end of the crown sheet vand is spaced a, short distance above the same, said ends being equally spaced on each side the median plane of the crown sheet. VEach plate 20 is provided with openingsfQl through which the stay bolts 19 in the planes ofy said plates extend, said openings being relatively large coinpared to the stay bolts so that there-is no engagement or abrasion therebetween.

As the waterv in the side water legs risesY under the action of theheat in the firebox,

' said plateswill directportions of such water inwardly toward the high end of the crown she-et. lVhen the water level falls so as to uncover the high spot or yhead end of the` crown sheet, the water deflected by said plates will ylimit the uncovered dry 'area of y said head end of the crown sheet to one of such size as is safe in practice. Thus said area will under the action' of the heat in the rebox Vbecome softened and will flex in- `wardly and will-tend to pull away from the stay bolts therein which will permitsteam to leak into the irebox in such amounts as will be noticed .by the fireman, during the stolring of the firebox, who will admit feed water to the boiler to flood'said dry area and rectifyY the boiler water level. The crown sheet when completely loodedor submergedvwill he safe for continued operation to complete the run but the engine is then removed from service at the first opportunity.

The deflector plates being disposed edge wise to the plane of the forward flow oi oirculation of boilerwater' presents no interference thereto and when the crown sheet is submerged, as it will be at the properboiler water level7 said plates remain passive or inactive. However when the boiler water level falls so as to uncover the head end of the crown sheet, said plates atk once become active to maint-ain saidy uncovered vand dry area to one of assmall dimensions as will operate in the manner before described.

While in describing my invention, I have referred to certain details of mechanical construction as well as form and arrangevment of the parts thereof, t-he same is to be taken as byway of illustration-only andnot by way of limitation except as may be pointed out in the appended claims.

I claim as my invention:

,1.- A locomotive lboiler l embodying` therein,- innerand outei stay boltedy sheets delin-y ing a ireboX and side-water legs,and deinner and outer stay bolted sheets defining a lireboxandiside-water legs, and defiector plates positioned in said side water legs and each fixedat one end to the outer side sheets and each having its free end overhanging the crown sheet at the high end thereof, said plates having openings therein through which the stay bolts extend without engagement and acting at a predetermined low wat\r level to deflect apart of the upwardly moving water in the side water legs toward f that area ofthe crown. sheet which becomes uncoveredand to maintain. said area to one of small dimensions.

In testimony whereof, I have hereunto set my hand, this thdayvof AprihlQQG.

CHARLES GILBERT HAl/VLEY. 

